/*
 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "It_posix_container.h"

#define STACK_SIZE (1024 * 1024)    /* Stack size for cloned child */
#define CHILD_FUNC_ARG (0x2088)
#define STR_LEN  50
#define SEC 172800
#define NSEC 800000000

static int childFunc(void *arg)
{
    char path[STR_LEN];
    char timeOff[STR_LEN];
    char readBuf[STR_LEN];
    int ret;
    struct timespec tp = *((struct timespec *)arg);
    struct timespec tp1;

    ret = clock_gettime(CLOCK_MONOTONIC_RAW, &tp1);
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);
    ret = ((tp1.tv_sec >= tp.tv_sec + SEC));
    ICUNIT_ASSERT_EQUAL(ret, 1, ret);

    return 0;
}
static int WriteProcTime(int pid)
{
    int ret;
    char path[STR_LEN];
    char timeOff[STR_LEN];

    sprintf(timeOff,"monotonic %d %d", SEC, NSEC);
    sprintf(path,"/proc/%d/time_offsets", pid);
    int strLen = strlen(timeOff);
    int fd = open(path, O_WRONLY);
    ICUNIT_ASSERT_NOT_EQUAL(fd, -1, fd);

    ret = write(fd, timeOff, strLen);
    ICUNIT_ASSERT_EQUAL(ret, strLen, ret);

    close(fd);
    return 0;

}

static UINT32 Testcase(VOID)
{
    int ret;
    char *stack;
    char *stackTop;
    int status;
    struct timespec tp;

    stack = (char*)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
    stackTop = stack + STACK_SIZE;

    ret = unshare(CLONE_NEWTIME);
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);
    ret = WriteProcTime(getpid());
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);

    ret = clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);
    auto pid = clone(childFunc, stackTop, CLONE_NEWTIME | SIGCHLD, &tp);
    ICUNIT_ASSERT_NOT_EQUAL(pid, -1, pid);

    ret = waitpid(pid, &status, 0);
    ICUNIT_ASSERT_EQUAL(ret, pid, ret);

    ret = WIFEXITED(status);
    ICUNIT_ASSERT_NOT_EQUAL(ret, 0, ret);

    int exitCode = WEXITSTATUS(status);
    ICUNIT_ASSERT_EQUAL(exitCode, 0, exitCode);
    return 0;
}

VOID ItPosixContainerTime004(void)
{
    TEST_ADD_CASE("IT_POSIX_CONTAINER_TIME_004", Testcase, TEST_POSIX, TEST_CONTAINER, TEST_LEVEL0, TEST_FUNCTION);
}

